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Articles on Electricity

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The control room of the California Independent System Operator, which manages the flow of electricity on the state’s power grid. Rolf Schulten/ullstein bild via Getty Images

What is curtailment? An electricity market expert explains why states sometimes have too much wind or solar power

Sometimes wind and solar power produce more electricity than the local grid can handle. Better energy storage and transmission could move extra energy to where it’s needed instead of shutting it off.
Motorists drive at night on a road without street light as Nigeria struggles with power outages in a commercial district of Lagos. Photo by PIUS UTOMI EKPEI/AFP via Getty Images

Why Nigeria’s electricity grid collapses and how to shore it up

Nigeria’s national electricity grid has collapsed more than 200 times since 2010, regularly resulting in widespread blackouts.
The U.S. has thousands of lakes and reservoirs that could be paired for pumped hydro storage without the need for rivers. Ollo via Getty Images

Batteries get hyped, but pumped hydro provides the vast majority of long-term energy storage essential for renewable power – here’s how it works

A team of researchers found 35,000 pairs of existing reservoirs, lakes and old mines in the US that could be turned into long-term energy storage – and they don’t need dams on rivers.

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